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ARM: OMAP5+: Override switch_to_hypervisor function

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Override the switch_to_hypervisor function to switch cpu to hypervisor
mode using the available ROM code hook early in the boot phase before
the boot loader checks for HYP mode.

Based on the work done by Jonathan Bergsagel jbergsagel@ti.com.

Cc: beagleboard-x15@googlegroups.com
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Keerthy 2016-09-14 10:43:33 +05:30 committed by Tom Rini
parent d31d4a2d75
commit 1dbc40e7d2
1 changed files with 24 additions and 0 deletions
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24
arch/arm/cpu/armv7/omap-common/lowlevel_init.S
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@ -24,6 +24,30 @@ ENTRY(save_boot_params)
str r0, [r1]
b save_boot_params_ret
ENDPROC(save_boot_params)
#if !defined(CONFIG_TI_SECURE_DEVICE) && defined(CONFIG_ARMV7_LPAE)
ENTRY(switch_to_hypervisor)
/*
* Switch to hypervisor mode
*/
adr r0, save_sp
str sp, [r0]
adr r1, restore_from_hyp
ldr r0, =0x102
b omap_smc1
restore_from_hyp:
adr r0, save_sp
ldr sp, [r0]
MRC p15, 4, R0, c1, c0, 0
ldr r1, =0X1004 @Set cache enable bits for hypervisor mode
orr r0, r0, r1
MCR p15, 4, R0, c1, c0, 0
b switch_to_hypervisor_ret
save_sp:
.word 0x0
ENDPROC(switch_to_hypervisor)
#endif
#endif
ENTRY(omap_smc1)